add test for ExecStopPost

This is a follow-up to #4843.

test/TEST-42-EXECSTOPPOST/Makefile

@@ -0,0 +1,9 @@
+BUILD_DIR=$(shell ../../tools/find-build-dir.sh)
+
+all setup run:
+	@basedir=../.. TEST_BASE_DIR=../ BUILD_DIR=$(BUILD_DIR) ./test.sh --$@
+
+clean clean-again:
+	@basedir=../.. TEST_BASE_DIR=../ BUILD_DIR=$(BUILD_DIR) ./test.sh --clean
+
+.PHONY: all setup run clean clean-again

test/TEST-42-EXECSTOPPOST/test.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+set -e
+TEST_DESCRIPTION="test that ExecStopPost= is always run"
+
+. $TEST_BASE_DIR/test-functions
+
+test_setup() {
+    create_empty_image_rootdir
+
+    (
+        LOG_LEVEL=5
+        eval $(udevadm info --export --query=env --name=${LOOPDEV}p2)
+
+        setup_basic_environment
+
+        mask_supporting_services
+
+        # setup policy for Type=dbus test
+        mkdir -p $initdir/etc/dbus-1/system.d
+        cat > $initdir/etc/dbus-1/system.d/systemd.test.ExecStopPost.conf <<EOF
+<?xml version="1.0"?>
+<!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
+        "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
+<busconfig>
+    <policy user="root">
+        <allow own="systemd.test.ExecStopPost"/>
+    </policy>
+</busconfig>
+EOF
+
+        # setup the testsuite service
+        cat >$initdir/etc/systemd/system/testsuite.service <<EOF
+[Unit]
+Description=Testsuite service
+
+[Service]
+ExecStart=/testsuite.sh
+Type=oneshot
+EOF
+        cp testsuite.sh $initdir/
+
+        setup_testsuite
+    )
+    setup_nspawn_root
+}
+
+do_test "$@"

test/TEST-42-EXECSTOPPOST/testsuite.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+set -ex
+
+systemd-analyze log-level debug
+
+systemd-run --unit=simple1.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=simple -p ExecStopPost='/bin/touch /run/simple1' true
+test -f /run/simple1
+
+! systemd-run --unit=simple2.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=simple -p ExecStopPost='/bin/touch /run/simple2' false
+test -f /run/simple2
+
+systemd-run --unit=exec1.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=exec -p ExecStopPost='/bin/touch /run/exec1' sleep 1
+test -f /run/exec1
+
+! systemd-run --unit=exec2.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=exec -p ExecStopPost='/bin/touch /run/exec2' sh -c 'sleep 1; false'
+test -f /run/exec2
+
+cat > /tmp/forking1.sh <<EOF
+#!/bin/bash
+
+set -eux
+
+sleep 4 &
+MAINPID=\$!
+disown
+
+systemd-notify MAINPID=\$MAINPID
+EOF
+chmod +x /tmp/forking1.sh
+
+systemd-run --unit=forking1.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=forking -p NotifyAccess=exec -p ExecStopPost='/bin/touch /run/forking1' /tmp/forking1.sh
+test -f /run/forking1
+
+cat > /tmp/forking2.sh <<EOF
+#!/bin/bash
+
+set -eux
+
+( sleep 4; exit 1 ) &
+MAINPID=\$!
+disown
+
+systemd-notify MAINPID=\$MAINPID
+EOF
+chmod +x /tmp/forking2.sh
+
+! systemd-run --unit=forking2.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=forking -p NotifyAccess=exec -p ExecStopPost='/bin/touch /run/forking2' /tmp/forking2.sh
+test -f /run/forking2
+
+systemd-run --unit=oneshot1.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=oneshot -p ExecStopPost='/bin/touch /run/oneshot1' true
+test -f /run/oneshot1
+
+! systemd-run --unit=oneshot2.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=oneshot -p ExecStopPost='/bin/touch /run/oneshot2' false
+test -f /run/oneshot2
+
+systemd-run --unit=dbus1.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=dbus -p BusName=systemd.test.ExecStopPost -p ExecStopPost='/bin/touch /run/dbus1' \
+    busctl call org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus RequestName su systemd.test.ExecStopPost 4 \
+    || :
+test -f /run/dbus1
+
+! systemd-run --unit=dbus2.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=dbus -p BusName=systemd.test.ExecStopPost -p ExecStopPost='/bin/touch /run/dbus2' true
+test -f /run/dbus2
+
+cat > /tmp/notify1.sh <<EOF
+#!/bin/bash
+
+set -eux
+
+systemd-notify --ready
+EOF
+chmod +x /tmp/notify1.sh
+
+systemd-run --unit=notify1.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=notify -p ExecStopPost='/bin/touch /run/notify1' /tmp/notify1.sh
+test -f /run/notify1
+
+! systemd-run --unit=notify2.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=notify -p ExecStopPost='/bin/touch /run/notify2' true
+test -f /run/notify2
+
+systemd-run --unit=idle1.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=idle -p ExecStopPost='/bin/touch /run/idle1' true
+test -f /run/idle1
+
+! systemd-run --unit=idle2.service --wait -p StandardOutput=tty -p StandardError=tty -p Type=idle -p ExecStopPost='/bin/touch /run/idle2' false
+test -f /run/idle2
+
+systemd-analyze log-level info
+
+echo OK > /testok
+
+exit 0